• Journal of Intelligence and Information Systems
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• v.29 no.3
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• pp.249-265
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• 2023

Recently, the satellite industry has been paying attention to the private-led 'New Space' paradigm, which is a departure from the traditional government-led industry. The space industry, which is considered to be the next food industry, is still receiving relatively little attention in Korea compared to the global market. Therefore, the purpose of this study is to explore future signals that can help determine the market entry strategies of private companies in the domestic satellite industry. To this end, this study utilizes the theoretical background of future signal theory and the Keyword Portfolio Map method to analyze keyword potential in patent document data based on keyword growth rate and keyword occurrence frequency. In addition, news data was collected to categorize future signals into first symptom and early information, respectively. This is utilized as an interpretive indicator of how the keywords reveal their actual potential outside of patent documents. This study describes the process of data collection and analysis to explore future signals and traces the evolution of each keyword in the collected documents from a weak signal to a strong signal by specifically visualizing how it can be used through the visualization of keyword maps. The process of this research can contribute to the methodological contribution and expansion of the scope of existing research on future signals, and the results can contribute to the establishment of new industry planning and research directions in the satellite industry.

• Journal of Korean Society of Steel Construction
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• v.17 no.3 s.76
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• pp.263-270
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• 2005

This paper presents a program for protecting vehicles against side winds on highways. The present study consists of three processes. The first one involves giving a guideline for evaluating driving safety in high winds. The second one involves making a guideline for determining the necessity of wind protection system for a certain road area. A reasonable procedure is suggested based on the probability model of wind data on weather stations and the correction of local topographical conditions. The third one involves design of wind barriers. Both CFD analyses and wind tunnel tests were performed to find the proper type of wind barrier considering vehicle controllability, structural safety, economical efficiency as well as driver's visibility. Performance of the designed wind fences was verified from field tests. The performance of the four different types of wind barrier installed at the elevated bridge were tested and some of the results were provided.

• School Mathematics
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• v.9 no.2
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• pp.259-276
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• 2007

There have been a number of lesson analysis studies, yet not many studies address the issue of the perspective of students who play a key role in the lesson along with the teacher. The purpose of this study is to investigate how the teacher and the students interpret the mathematics lesson they experienced, and to find out the potential discrepancy between the teacher and the students in their perceptions of mathematics lesson. To pursue this purpose, 10 consecutive lessons were videotaped in the 8th grade mathematics classroom, and the video-stimulated post-lesson interviews were also conducted with the teacher and the students. Based on the lesson videos and the interview data, six discrepancies between the teacher and the students in their perceptions of mathematics lesson were dentified: the discrepancy between the teacher's intention and students' interest in the lesson; different interpretation and response to the teacher's mistake; formal abidance; topaze effect; different recognition of the students' preference among the topics; teacher's insufficient response to students' needs. These six discrepancies were further categorized and some implications were drawn.

• Journal of Korea Water Resources Association
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• v.45 no.11
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• pp.1187-1199
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• 2012

A hybrid forecasting scheme based on wavelet decomposition coupled to a support vector machine model is presented for water demand series that exhibit nonlinear behavior. The use of wavelet transform followed by the SVM model of each leading component is explored as a model for water demand data. The proposed forecasting model yields better results than a traditional ARIMA time series forecasting model in terms of self-prediction problem as well as reproducing the properties of the observed water demand data by making use of the advantages of wavelet transform and SVM model. The proposed model can be used to substantially and significantly improve the water demand forecasting and utilized in a real operation.

• Journal of the Korea Convergence Society
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• v.11 no.6
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• pp.15-21
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• 2020

E-commerce live broadcast is a new online shopping model that has gradually emerged in China in recent years. In the e-commerce live broadcast, the audience gathered into a buying group by watching and participating in virtual interaction, and obtained stable emotional energy from it. Closely following the concept of emotional energy, with the help of the interaction ritual chain model, the components of e-commerce live broadcast can be clarified. And the paper shows how individuals can form a buying group in social interaction. I will take the interaction behavior in e-commerce live broadcast as the research object and observe the phenomenon based on the theory of interaction ritual, then come up with the interaction ritual chain model of E-commerce live broadcast group.

• Science of Emotion and Sensibility
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• v.17 no.2
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• pp.111-122
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• 2014

This study has analyzed the scanning path algorithm shown at the process of exploring spatial information through an observation experiment with the object of lobby in subway station. In the estimation of observation time by section, the frequency of scanning type was found to increase as the observation time got longer, which makes it possible that the longer the observation lasts the more the observation interruptions occur. In addition, the observation slipped out of the range of imaging when any fatigue was caused from the observation or the more active exploration took place. Furthermore, when the trend line was employed for the examination of the changes to the scanning type by time section, "concentration" "diagonal or vertical" showed a sharp and a gentle increases along with the increase of time section respectively, while "circulation. combination, horizontal" showed a reduction. The observation data of the subjects observing a space include various visual information. The analysis of the scanning type found at "attention concentration" enabled to draw this significant conclusion. The features of increase and decrease of scanning types can be a fundamental data for understanding the scanning tendency by time.

• The Korean Journal of Ecology
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• v.26 no.4
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• pp.215-221
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• 2003

Ecological concepts were embedded in the old Korean maps and other documents. The concepts may represent ecological views which people had at the time. Through those ecological views, we propose that we can see a watershed concept in old Korean maps. We also discuss relevant records to understand the history of this concept. While many scholars have highlighted in the Baekdoodaegan frame only the pan of the mountain ranges, we are pointing out other perspectives. Our emphasis is that the concept is explicitly related to a watershed concept. An old Korean map shows that people at that time divided the Korean Peninsula into many watersheds, which was as early as 1402. We can even say that the idea is identified in a literal document written in the 12th century. It is hypothesized that a typical Korean landscape configuration was developed in the arrangement of village and surrounding landscape elements situated in a watershed. In addition, we suggest that the view had some negative effects on the current society. Even though the ideas of our ancestor are something to be praised, further study is needed to improve it in a wise manner.

• The Journal of the Convergence on Culture Technology
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• v.5 no.3
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• pp.165-170
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• 2019

This study examined the meaning of employees' university-graduate school experiences for job conversion. For it, date was collected and analyzed by in-depth interview for 7 employees with university-graduate school experiences from Jun. to Doc. 2018. As a result, 3 great ranges and 8 sub-factors of the meaning of employees' university-graduate school experience for job conversion. were drawn. First is the change of value changing new view and recognition. Second is confidence improvement, motivation, and psychological change recovering interests and aptitudes. Third is changes of actual life that obtain pleasure of leaning, formation of personal network, and family supports. From the above results, employees' university-graduate school experience may let them challenge new works with confidence and be analyzed as appearance of identity finding the work suitable for their aptitude and living a subjective life.

• (The)Study of the Eastern Classic
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• no.56
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• pp.171-207
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• 2014

This thesis is to clarify King Jeongjo's perspective on Chunchu and critical mind on Chunchu Study in Joseon through analyzing more than twenty sets of King Jeongjo's Chaekmun: Chunchu (策文:春秋) which are included in Hongjaejeonseo (弘齋全書). Chaekmun covers extensive themes of Chunchu Study such as composition or contents of Chunchu and assessment of Chunchu and three legends, etc. With this Chaekmun, King Jeongjo emphasized importance of the scripture Chunchu as the 'great scripture for governing a nation' and stressed the need of right interpretation and understanding on Chunchu. Along with the Article Chunchu in Gyeongsagangeui in the year of 1793 and 1796, this material presents not only King Jeongjo's perspective on Chunchu and his academic characteristics but also status and major issues of Chunchu Study in Joseon with significant value in history of thoughts.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.5
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• pp.199-206
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• 2021

This paper describes the feasibility and reliability verification of installing a protective structure to protect attack periscopes. The attack periscope is the critical equipment of a submarine to enable the user to monitor surface and air activity, collect navigational data, and detect and identify targets. The attack periscope provides target information acquired through TV, IR camera, and laser range finder to the combat system. In the product improvement program, the upper part of the masts was exposed to the outside of the sail because the existing attack periscope was replaced with a new one. On the other hand, the head sensor can be damaged by floating objects, such as fishing nets, during sea navigation. Therefore, the installation of a protective structure for an attack periscope improved the equipment operation performance. The feasibility and reliability of the installation of the protective structure were verified by examining the influence of URN.